Debian::Dependencies(3pm)				User Contributed Perl Documentation				 Debian::Dependencies(3pm)

NAME

       Debian::Dependencies - a list of Debian::Dependency objects

SYNOPSIS

	   my $dl = Debian::Dependencies->new('perl, libfoo-perl (>= 3.4)');
	   print $dl->[1]->ver;      # 3.4
	   print $dl->[1];	     # libfoo-perl (>= 3.4)
	   print $dl;		     # perl, libfoo-perl (>= 3.4)

	   $dl += 'libbar-perl';
	   print $dl;		     # perl, libfoo-perl (>= 3.4), libbar-perl

	   print Debian::Dependencies->new('perl') + 'libfoo-bar-perl';
				     # simple 'sum'

	   print Debian::Dependencies->new('perl')
		 + Debian::Dependencies->new('libfoo, libbar');
				     # add (concatenate) two lists

	   print Debian::Dependencies->new('perl')
		 + Debian::Dependency->new('foo');
				     # add depeendency to a list

DESCRIPTION

       Debian::Dependencies a list of Debian::Dependency objects, with automatic construction and stringification.

       Objects of this class are blessed array references. You can safely treat them as arrayrefs, as long as the elements you put in them are
       instances of the Debian::Dependency class.

       When used in string context, Debian::Dependencies converts itself into a comma-delimitted list of dependencies, suitable for dependency
       fields of debian/control files.

   CLASS METHODS
       new(dependency-string)
	   Constructs a new Debian::Dependencies object. Accepts one scalar argument, which is parsed and turned into an arrayref of
	   Debian::Dependency objects.	Each dependency should be delimitted by a comma and optional space. The exact regular expression is
	   "/s*,s*/".

   OBJECT METHODS
       add( dependency[, ... ] )
	   Adds dependency (or a list of) to the list of dependencies. If the new dependency is a subset of or overlaps some of the old
	   dependencies, it is not duplicated.

	       my $d = Debian::Dependencies('foo, bar (<=4)');
	       $d->add('foo (>= 4), bar');
	       print "$d";     # foo (>= 4), bar (>= 4)

	   dependency can be either a Debian::Dependency object, a Debian::Deendencies object, or a string (in which case it is converted to an
	   instance of the Debian::Dependencies class).

       remove( dependency, ... ) =item remove( dependencies, ... )
	   Removes a dependency from the list of dependencies. Instances of Debian::Dependency and Debian::Dependencies classes are supported as
	   arguments.

	   Any non-reference arguments are coerced to instances of Debian::Dependencies class.

	   Only dependencies that are subset of the given dependencies are removed:

	       my $deps = Debian::Dependencies->new('foo (>= 1.2), bar');
	       $deps->remove('foo, bar (>= 2.0)');
	       print $deps;    # bar

	   Returns the list of the dependencies removed.

       has( dep )
	   Return true if the dependency list contains given dependency. In other words, this returns true if the list of dependencies guarantees
	   that the given dependency will be satisfied. For example, "foo, bar" satisfies "foo", but not "foo (>= 5)".

       prune()
	   This method is deprecated. If you want to sort the dependency list, either call "sort" or use normal perl sorting stuff on the
	   dereferenced array.

       sort()
	   Sorts the dependency list by packagee name, version and relation.

SEE ALSO

       Debian::Dependency

AUTHOR

       Damyan Ivanov <dmn@debian.org>

COPYRIGHT &; LICENSE
       Copyright (C) 2008, 2009, 2010 Damyan Ivanov <dmn@debian.org>
       Copyright (C) 2009 gregor herrmann <gregoa@debian.org>

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as
       published by the Free Software Foundation.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation,
       Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

perl v5.14.2							    2012-01-15						 Debian::Dependencies(3pm)